3 papers
physics.optics2026
Pulse-driven photonic transitions and nonreciprocity in space-time modulated metasurfaces
Zeki Hayran, John B. Pendry, Prasad P. Iyer +1
Time-varying photonic systems open new possibilities for controlling light, enabling photonic time crystals, time reflection and refraction, frequency conversion, synthetic gauge f…
physics.optics2025
Chirality-driven all-optical image differentiation
Stefanos Fr. Koufidis, Zeki Hayran, Francesco Monticone +2
Optical analog computing enables powerful functionalities, including spatial differentiation, image processing, and ultrafast linear operations. Yet, most existing approaches rely…
physics.optics2025
Broadband Low-loss Unidirectional Reflection On-chip with Asymmetric Dielectric Metasurface
Heijun Jeong, Zeki Hayran, Yuan Liu +6
Metasurface has emerged as a powerful platform for controlling light at subwavelength thickness, enabling new functionalities for imaging, polarization manipulation, and angular mo…